Bakers percentages are relative to flour weight (flour equals 100%) and every other ingredient is a percentage of this. Flour from the Starter is not counted.
Note: This recipe was uploaded in grams and has been automatically converted to other measures, let us know of any corrections.

Method

Place ingredients into breadmaker, liquids first, and start breadmaker on the dough setting. Let breadmaker run only through it's first mix cycle and then check dough. If it is well mixed and has formed a soft, round ball continue onto next step. If crumbly, add water. If soupy, add flour. Restart breadmaker and let run through first mix.
Place sourdough into loaf pan and cover with cling film to raise. It will take about 8 hours in a warm place.
Bake in 425 degree oven until done, about 18 mins.